Comment on 'Five-Dimensional Cosmological Model with Variable G and Λ'

摘要

This comment corrects the small errors in the Letter of Baysal and Yilmaz[Chin.Phys.Lett.24(2007)2185],where the case of n=1 was ignored.Meanwhile,the discussion in this comment on the case of n=-3 is novel,which shows a potential reason why today the effect of the extra dimension has not been observed.